A satellite is revolving in a circular orbit at a height h from the earth's surface (radius of earth R ; h

Question

A satellite is revolving in a circular orbit at a height h from the earth's surface (radius of earth R ; h << R ). The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's gravitational field, is close to (Neglect the effect of atmosphere.)

TestHub · Accepted Answer

Since, h << R , V e = 2 g R & V 0 = g R ∴ The minimum increase in velocity required, V e - V 0 = 2 g R - g R = 2 - 1 g R

Physics - Gravitation Question with Solution | TestHub

Options:

Doubts & Discussion